Family | PLANTAGINACEAE |
Genus species | Penstemon humilis Nutt. ex A.Gray sect. Penstemon |
Synonyms | Penstemon cinereus Piper |
Penstemon collinus A.Nelson | |
Penstemon puberulus M.E.Jones | |
Habitat | dry, rocky slopes |
Altitude | 1000-3400m |
Description | finely cinereous, leaves entire, basal leaves persistent, lanceolate to ovate, to 12cm, stem leaves reduced, inflorescence verticillate, few flowered, flowers 10-17mm |
Size | 5-40cm |
Color | dark blue |
Bloom | summer |
Ca | |
Type | tuft |
Cultivation | sunny, dry, rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
Propagation | seed in spring, barely covered, germ. 1-3 months, 13-18°C cuttings in late summer |
Territory |
Northern America
Northwestern U.S.A. (Colorado , Idaho , Montana , Oregon , Washington , Wyoming ) Southwestern U.S.A. (California , Nevada , Utah) |
Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
Comments | PLANTAGINACEAE
humilis brevifolius A.Gray, Syn. Fl. N. Amer. 2(1): 267 (1878)
humilis obtusifolius (Pennell) D.D.Keck, ibid.
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